Water Flashcards
1
Q
What is ph?
A
Concentration of h+ ions
2
Q
What is unique about water molecule?
A
Not linear, positive and negative charges
3
Q
T/F: higher temp means lower ph
A
True
4
Q
What are 5 requirements brewing water should meet?
A
Colorless, Tasteless, odorless
Lack turbidity
Suitable ph and alkalinity
Mineral balance
Microbiologically pure
5
Q
What is the impact of slaked lime to brewing water?
A
Reduces residual alkalinity via decarbonation
6
Q
What is the ideal range for mash ph
A
5.2 to 5.6
7
Q
What is temporary hardness?
A
Bicarbonate that can be removed by boiling
8
Q
What is permanent hardness?
A
Hardness formed with mineral acids - cannot be removed
9
Q
What are 2 methods of treating brewing water?
A
Sterilization
Reduction of alkalinity (decarbonation)
Deaeration
Reduction of volatiles
